Kayayyaki

Buffer shine bayani wanda zai iya tsayayya da canje-canjen pH lokacin da aka ƙara ƙaramin acid ko alkali da ruwa.Tsarin buffer pH yana taka muhimmiyar rawa wajen kiyaye ƙimar pH na al'ada na kwayoyin halitta da yanayin yanayin ilimin lissafi na al'ada.Yawancin sel suna iya aiki ne kawai a cikin kewayon pH kunkuntar.Yana buƙatar samun tsarin buffer don tsayayya da canje-canjen pH da ke faruwa a lokacin metabolism.Akwai manyan tsarin buffer pH guda uku a cikin kwayoyin halitta, sune furotin da tsarin buffer bicarbonate.Adadin kowane tsarin buffer Ya bambanta a cikin nau'ikan sel da gabobin daban-daban.

Tasirin buffer bayani na buffer wanda ya ƙunshi raunin acid HA da gishiri NaA akan acid shine saboda kasancewar isasshen adadin alkali A- a cikin maganin.Lokacin da aka ƙara wani adadin acid mai ƙarfi zuwa wannan maganin, H ions suna cinyewa da gaske ta A-ions:

Sabili da haka, ƙimar pH na maganin kusan ba ta canzawa;lokacin da aka ƙara wani ƙaƙƙarfan tushe mai ƙarfi, raunin acid HA a cikin maganin yana cinye OH-ions kuma yana hana canjin pH.

Ƙara ƙaramin adadin acid mai ƙarfi ko tushe mai ƙarfi zuwa maganin buffer, ƙimar pH na maganin ba zai canza da yawa ba, amma idan an ƙara adadin acid ko alkali, maganin buffer zai rasa tasirin buffer.Wannan yana nuna cewa ƙarfin ajiyar sa yana da ƙayyadaddun iyaka.

Ƙarfin buffer bayani na buffer yana da alaƙa da tattara abubuwan abubuwan da suka haɗa da maganin buffer.Maganin buffer wanda ya ƙunshi 0.1mol·L-1HAc da 0.1mol·L-1NaAc yana da babban ƙarfin buffer fiye da maganin buffer na 0.01mol·L-1HAc da 0.01mol·L-1NaAc.Ana iya tabbatar da hakan ta hanyar lissafi.Duk da haka, ƙaddamar da abubuwan da ke cikin maganin buffer bai kamata ya zama babba ba, in ba haka ba, ba za a iya watsi da hulɗar tsakanin ions ba.